Fire-extinguishing apparatus.



l. B. & O. H. ERWIN.

FIRE EXTINGUISHING APPARATUS. APPLICATION FILED Aue.3I, I9I6.

Patent-ed May l5, 1917.

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tinguishing apparatus of the class adapted 40 the fire.

IFIRillEXTIN'GrUISHING APPARATUS. l

Specification of Letters Patent.

Patented May 15, 1917.

Application led August 31, 1916; Serial No. 117,827.

To all who/m. 'it may concern.'

Be it known that we, JAMES B. ERWIN and ORLANDO R. ERWIN, citizens of the United States, residing at the city of Milwaukee, county of Milwaukee, 'v and State of Wisconsin, have invented new and useful Improvements in Fire-Extinguishing Apparatus, of which the following 1s a specification.

Our invention relates to portable fire exto be operate-d by inverting, and especially to that class adapted to generate a large quantity of lingering foam and forcibly discharge the same upon the lire when required.

The primary objectof this invention is to provide a very -simple removable acid or solution-container of a suitable size and capacity which can be readily inserted into any ordinary standard so-called soda-andacid type iire extinguisher, and thereby convert the same-into a foam generating extinguisher, merely bysubstituting the proper -f chemical solutions, in place of the ordinary soda solution and acid, whereby the ordinary soda-and-acid type extinguishers may not only become highly efficient in extinguishing fires in ammable liquids, oils, greases, etc., but may be readily changed,

whereby they are then rendered vastly more Y bottle and cage therefor (not shown -in the eicient on ordinary fires.

In this invention two distinct chemical solutions are normally held separate from each other within a mixingy receptacle, and are only allowed to mix when the fire occurs, which mixing is effected by simply inverting the extinguisher, whereby gas is generated which forms the foam with the chemicals, which foam, and gas are An important object of this invention is to render all the parts easily removable for inspection, washing and recharging, also the two separate solutions vmay be quickly prepared direct in Itheir respectiveA compartments without having to mix the same rst Ain separate pails.

Referring to the drawings:

Figure 'f 1 represents an ordinary?i daand-acid-type fire extinguisher, havingj-our improved removable acid-or-solution receptacle inserted centrally, in place lofthe ordinary type acid bottle and cage, the drawing being largely in central vertical section.

Fig. 2 is a transverse lhorizontalsectional view, drawn on line 2-'-2 of Fig.l 1. Y

noxious to' Fig. 3 is an elevationaL view in perspective of our improved removable inner solu` tion receptacle, shown removed from the extinguisher shown in Figs. 1 and 2, and

Fig. 4 is a plan view of a bracket shown removedfrom the extinguisher shown in Fig. l, said bracket being adapted to receive and retainA the lower end of said inner solution receptacle in a central longitudinal position in said extinguisher.

Like parts are identified by similar reference characters in both views.

1 represents the shell of an ordinary sodaand-acid extinguisher of the invertible type, and the same is provided with the usual head 2, securely closing the lower end 3, and

the usualcollar 4f, threaded at 5, is secured to the upper end 6. A wheel cap 7 providedl with a threaded annular flange 9 is adapted to engage the threaded collar i and tightly close the upper end 6 of the shell l as is ordinary construction, whereby a substantially closed tank A is formed` which comprises the outer solution receptacle .and mix- `ing chamber of our invention. The usual hose 10, provided with nozzle 11, has open communication with the normal upper end 6 ofthe shell 1, through ythe coupling nut 14, coupled .to an E. 12, as is ordinary practice.

As before stated, the ordinary glass acid drawing) are removed and dispensed with, and our improved removable inner solution receptacle B, which is made of a suitable size .to t. any ordinary standard extinguisher, is shown installed, Fig. .1, in its operativeposition within the receptacle A.y

The said receptacle B, is constructed tubular (of copper, brass, lead or glass), having an outslde diameter slightly less than the inside diameter of the collar 4, whereby said receptacle B may be easily slipped through the collar 4 of any' standardextinguisher.

` `members 31, 31,'ve-rtical end members 32, 32

and tapering members 33, 33. The said bail is rigidly connected to the upper end of said receptacle B by means of rivets 18, 18 or the equivalent, rigidly securing said end members 32, 32, to said receptacle. The said bail 13 is formed to nicely and loosely fit within said annular collar 4, having a width slightly less than the inside diameter of lsaid lanon.- f.

collar 4, as shown in Figs. 1 and 2. ylhe said receptacle B has a suilicient length so that when standing upon the bottom head 2 of any 'standard tank A, the bail attached to the upper end thereof `will rest loosely within the neck or collar d, as shown in- Figs. l and 2.

We also preferably provide at the lower end some stead-ying means additional to that of the bail or handle 13 engaging the collar or neck 4, rfor loosely but removably retaining said secondary receptacle B in a central longitudinal'position within said tank A, which may consist of an annular panshaped bracket 35, having a dished bottom 36, and an integral annular tapered member 37, extending circumferentially around and a slight distance from the lower end of said receptacle B. rlhe bracket 35 is rigidly fastened centrally `to' the bottom head 2, as shown in Fig. l, by means of a rivetBS or the equivalent. The receptacle B is closed at its lower end 21 by means of a head 20 secured leak-proof to the tube 16 in any suitable manner.

'lhe said receptacle B is provided withl a i (three gallon size) the wheel cap 7 is rst unscrewed and removed in the' usual way. Then the innerreceptacle B, together with stopple 26, is slipped out through the neck t when the two receptacles and B may be,

charged as ollowss- Place in receptacle A..

lstlCold water. 211; gallons' 2 ounces 2nd-Sodium bicarbonate-.." 3rd-Powdered soap bark 2.3 ouncesv And stir thoroughly until these chemicals are dissolved.

Place in removed receptdce 1st- Cold watern"n 3 pints 2nd--Aluminium sulfate 3 pounds Nora- Add the aluminium sulfate slowly Now place the loose stopple 26 back upon its seat on the receptacle B, and slip the receptacle uprightly into the tank A through collar 4. The lower end of the receptacle B should be inserted centrally' within the bracket 37 therefor, which is located on the lower head of tank A. The wheel cap 7 is then screwed back tightly in place upon its Leanne/a collar e when the extinguisher is charged and ready for a fire. To discharge the extinguisher the same has simply to be inverted or reversed so that the-wheel cap 7.

structed on this principle and employingthe above chemicals generates from twentylive '(25) to thirty (430) gallons of foam which is thrown through a quarter of an inch nozzle a distance of from thirty-ve to forty feet for a period of one minute, and will extinguish a tank of burning gasolene having a surface area of thirty square Having thus described our invention what lwe claim as new and desire to secure by Letters `Patent, is

l. The combination of an ordinary standard tip-over re extinguisher tank of the soda-and-acid type, an elongated cylindrical inner solution receptacle, removably in= stalled therein, through the usual top coll lar-neck of said extinguisher tank, a bail, rigidly connected to the upper end of said inner receptacle, said `bail fitting loosely in the collar of said extinguisher tank, for loosely retaining the upper discharge end of said inner receptacle in a central longitudinal position in said extinguisher tank, and a gravity opening stopple seating unattached upon and closing the upper-end of vsaid inl ner receptacle 2. A fire extinguisher, comprising a substantially closed "tubular'outer receptacle, an

elongated tubular inner receptacle loosely and removably installed therein in a longitudinal' position, said receptacles having openings -at corresponding ends, a collar attachedto said outer receptacle at the openin there-` of and having a neck rigidly fastened thereto, an outer cover for said neck, means for securely holding said cover upon said neck, a bail, rigidly connected to the discharge end of said inner receptacleand said bail tting loosely-in the collar of said outer receptacle, an inner stopple seating upon ,butr unattached to the discharge end ot said inner receptacle, together with' lnneans rigidly aiixed to the inside wall of said outer receptacle forlooselyandy removably supporting and retaining the lower end of said inner receptacle in a longitudinal po-l sition within said exterior receptacle.

3. lln a re'extinguisher of the described class, the combination of an exterior recep tacle .provided at its upper end with a 'discharge opening and a contracted neck,

and at its lower end withan outwardly 139' and upwardly tapering bracket adapted to tacle in place and facilitates removingthe surround and removably retain the lower same from said outer receptacle. end of an inner receptacle in place in said In testimony whereof We aIiX our signaexterior receptacle, an inner receptacle protures in the presence of two Witnesses. 5 vided at its upper end with a loosely fitting JAMES B ERWIN Stopple and. a, bail, Said inner receptacle'be- R ing of uniformdiameter throughout its length, said bail being adapted to removably Witnesses: t the contracted neck of said inclosing re- ALICE J. MCKERIHAN, 10 ceptacle, While it retains said inner recep- LAWRENCE B. ERWIN. 

